It is felt that all the contentions are in verbal mode. Employee should record ( audio/Visual) such instances.
Since you have resigned by email you are not absent.
You should have submitted resignation by letter under acknowledgment also.
If you signed your acceptance on the copy of appointment letter notice pay as expressed in appointment letter can be deducted from your FNF settlement. If no appointment letter is issued to you, then you may obtain a copy of the certified standing orders and go thru the same. If certified standing orders are not applicable in your company model standing orders shall apply.
You may submit a representation by letter addressed to good offices of your appointing authority, MD/CEO, Head-HR, and narrate your suffering/reason fof resignation and demand acknowledgment/acceptance of resignation, work experience/service certificate, settlement of dues, payment of dues by bank DD only, FNF statement, form 16, PF number/ accumulation reports/withdrawal-transfer forms, relieving letter, NOC/NDC etc. so as reach you within next say 7 days.
If the good offices do not grant any relief you may approach a competent and experienced lawyer and give inputs and your lawyer may choose to issue legal notice and after assessing your designation, nature of job, salary etc may advice you O/o labor Commissioner/wages inspector, civil court.
Employee should remain amiable and if rude, bad conduct, torturous conduct at work place exceeds the threshold limit must report instances to good offices in writing under acknowledgment. If company maintains studied silence, or adopts tactics than being fair, employee should submit minutes. It becomes record for future.
4 months is too short a time in employment. Employee should check the credentials of employer before joining. Many unscrupulous employers resort to conduct as posted by you.